Maintenance bug killing protocol is to do the regular dose of anti-parasitic like always, once every three days for the rest of your life. That doesn't give the bugs a chance to get a hold on you again. Our world is full of poisons that includes solvents and has always been full of bug eggs. We are not supposed to be part of their life cycle, but b/c of the poisons, we are. If you don't want to get re-infested, follow the maintenance protocol.